Vitamin B-12 2000 mcg Sublingual, Value Size, 200 Tablets, Source NaturalsVitamin B 12 is an essential nutrient, involved in energy production, brain and nerve health. It is necessary for proper DNA replication, red blood cell production and myelin sheath formation. Source Naturals Vitamin B12 tablets are formulated to dissolve easily under the tongue for easy absorption. Supplement Facts Serving Size: 1 Tablet Amount %DV Vitamin B 12 (as cyanocobalamin) 2 mg 33,333% Other Ingredients: sorbitol, mannitol, natural raspberry